package com.zyh.homeworkzhuantike;

public class Test05 {
    public static void main(String[] args) {
//        片段1
        int a = 10;
        {
            a=20;
            System.out.println(a);
        }
//        片段2
        int b=20;
        {
            System.out.println(b);
        }
        b=30;
        System.out.println(b);
    }
}
